Hi,
I'm trying to learn how to create basic tone.
Here is a great video on it by Aaron Blaise.
https://www.youtube.com/watch?v=RtJlyN7A6Ho&index=80&list=PLnwHSDbcd45J_4lXT0GgPHbm4mlXEtAJX
https://creatureartteacher.com/
Here is a blank cube adobe illustrator file i created that might be helpful to practice with.
adobe illustrator file
cheers,
Nate